Energy Simulation Software for Buildings: Review and Comparison. Such as environmental aspects, effects of shading, cooling system, internal gains, etc. 3.2 ESP-r (Energy Simulation Software tool). TRNSYS is a transient system simulation software tool with a modular structure that. Adding passenger comfort as an important factor and also focusing on system cost minimization step by step reveals the complexity of modern cooling- and HVAC-system design. This is a task, which can only be handled by comprehensive system level simulation and KULI is a software tool which has been developed to do exactly that. Liquid cooling for military signal processing offers advantages in high-power-density systems to dissipate heat at a higher rate than air-cooled systems and to transfer heat further away efficiently for thermal signature control. When using liquid-cooling systems, the challenge is to meet size, weight, and power (SWaP) goals while ensuring design for performance and reliability. A method is presented on how to model, characterize, and optimize the performance of cold-plate designs using 3-D computer-aided design (CAD)-embedded computational fluid dynamics (CFD) simulations to then immediately use this data in a system-level, fluid-dynamics simulation model of a full-pumped, liquid-cooling system. This 1-D/3-D CFD, model-based design approach enables earlier and more accurate evaluation of physical components. It created with the purpose is to share free PSP, PPSSPP games for all of you. Warriors orochi 4. Download PSP Games - I am so happy when you connect to my Blog. Advanced avionics, radar, and weaponry control are all significant sources of heat within the fuselage of a military aircraft. The power supplies used to support these electronics also create heat. As more functions are computerized and electronics are smaller, packed into tighter spaces, dissipating this heat gets complicated. Proper cooling cannot be done without enough space for the air to flow. As the heat builds up in the fuselage, it has to be dissipated from the instrument panel and cockpit. Composites used to build a lightweight aircraft structure and to block heat signatures from detection cannot be used, when considering thermal design, to dissipate heat generated by the interior electronics. Waste heat must be dissipated by other means such as ducting or active cooling devices. The need for alternative means of extracting heat from the avionics systems has led to advances in the development of liquid-cooled electronic components. Liquid-cooled systems have a much higher heat-transfer rate than air-cooled, and heat can be transported further from the source. However, cooling avionics with liquid has its challenges as well: Traditional air-cooled heat sinks are replaced with cold plates that have internal passageways designed to circulate coolant and absorb the heat from the electronics. The coolant is pumped through a heat exchanger or a series of heat exchangers to extract the heat. The cooling medium can either be air or another liquid or a hybrid system that uses a combination of both air. The architecture of the components (cold plates, etc.) used for extracting the heat from the electronics component must be optimized to perform consistently and reliably while maintaining the smallest footprint possible. Additionally, these systems require piping, pumps, valves, and controls as well as a heat sink. In most military applications, the heat sink is the fuel. Using the fuel of an aircraft as a heat sink was considered as far back as the late 1960s and early 1970s, when joint research by General Electric and the Wright-Patterson Air Force base looked into the heat capacity of the fuel for different regional and flight profiles [1]. The concept has garnered interest again as the industry sees advancement in aircraft structures and electronics and the desire to keep the heat and radar signature of the aircraft as small as possible. A good example of a liquid-cooling system is the one used on the F-22 Raptor. The coolant, polyalphaolefin (PAO), is circulated through the cold plates of the mission-critical electronics in the cockpit and pumped out to the wings to cool remote, embedded sensors. From there, the warm PAO passes through an air-cycle machine where it absorbs even more heat before being sent through a heat exchanger that dumps the heat from the PAO to the fuel. The real challenge of these cooling systems is to create an optimized design that keeps the mission-critical electronics at their desired operating temperature of 68 °F [2], working properly no matter the mission and flight profile, whether the fuel tank is full (large heat sink) or nearly empty (small heat sink). To achieve this, the cold plates, piping system, and heat exchangers must be designed simultaneously to determine how they interact with each other. The of the cold plates can be done with 3-D thermal and analysis to find the best option for the internal geometry: whether it should contain pins, fins, or open passageways and whether the fins are aligned or staggered. Three-dimensional thermal simulation provides highly accurate results for the performance of the cold plate; however, trying to model the entire cooling system with such a tool would result in an enormous mesh size and would take too long. In such cases where component location, sizing, and heat exchanger performance are the critical aspects, a 1-D tool is effective for a full-system simulation.
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